Simplify the following expression. (-1 + 5i) + (7 - 8i)

• 6 + 3i

• 3i - 5

• 6 - 3i

• -3i + 6

Simplify the expression:   $i^{34}$  

• -1

• 1

• -i

• i

Solve the equation by factoring:   $x^2+2x=9x+18$  

• x=9, 2

• x=-9,-2

• x= 9,-2

• x=2, -9

Solve the equation by using the Quadratic Formula:   $2x^2-3x-4=0$  

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Simplify the following: (7 - 9i)(-4i)

• -36 - 28i

• -28 + 36i

• -26 - 28i²

• -36 + 28i

Solve the equation by completing the square: 2x²-10x+5=0

• 5, -1

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